New York State Route 3
Major east–west state highway in New York, in the United States, that connects central New York to the North Country region near the Canada–US border via Adirondack Park
New York State Route 3 (NY 3) is a major east–west state highway in New York, in the United States, that connects central New York to the North Country region near the Canada–US border via Adirondack Park. The route extends for 245.88 miles (395.71 km) between its western terminus at an intersection with NY 104A in the Cayuga County town of Sterling and its eastern terminus at a junction with U.S. Route 9 (US 9) in the Clinton County city of Plattsburgh. NY 3 traverses eight counties and is a lakeside roadway from Mexico to Sackets Harbor, a mountainous route in Adirondack Park, and an urban arterial in Fulton, Watertown, and Plattsburgh.
In 1924, the segment of the Theodore Roosevelt International Highway within New York was designated NY 3. At that time, it spanned the full east–west length of the state, extending from the eastern bank of the Niagara River in North Tonawanda to the western edge of Lake Champlain in Plattsburgh; however, the routing through the North Country was significantly different at that time from its modern alignment. The route was moved onto its modern routing east of Watertown as part of the 1930 renumbering of state highways in New York; it was truncated to Sterling on its western end and rerouted to follow its current alignment from Sterling to Watertown roughly five years later.
Since 1924, there have been 14 suffixed routes of NY 3, all designated between NY 3A and NY 3G. Of these, all but one only existed during the 1930s. The only active designation is NY 3A, which was assigned in the 1950s to an alternate route of NY 3 in Jefferson County.
Route description
A substantial portion of NY 3 travels east–west across northern New York and passes through the northern part of the Adirondack Mountain Range. Much of this section of the highway is named as part of the Olympic Trail Scenic Byway.
The public source identifies “New York State Route 3” as major east–west state highway in New York, in the United States, that connects central New York to the North Country region near the Canada–US border via Adirondack Park. This brief keeps that definition visible, then builds a research path around York, State and Route.
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A short description can identify a subject without explaining its stakes. For “New York State Route 3”, the useful work is to connect “major east–west state highway in New York, in the United States, that connects central New York to the North Country region near the Canada–US border via Adirondack Park” to the records capable of establishing context and consequence.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Oct 20, 2025. The linked authority identifier is Q2485880. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1924 and 1930.
Modern boundaries and familiar names can conceal earlier jurisdictions or structures that do not align with the present site. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “New York State Route 3” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.